CN215877765U

CN215877765U - Sludge premixing and stirring device

Info

Publication number: CN215877765U
Application number: CN202122153673.9U
Authority: CN
Inventors: 高清元; 尹宗伟
Original assignee: Cangzhou China Railway Equipment Manufacturing Materials Co Ltd
Current assignee: Cangzhou China Railway Equipment Manufacturing Materials Co Ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-02-22
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a sludge premixing and stirring device which comprises a barrel body, a sewage inlet pipe, a sewage outlet pipe and an aeration pipe, wherein a stirring shaft driven by a motor is coaxially arranged in the barrel body, stirring teeth are arranged on the stirring shaft, the stirring shaft comprises a plurality of hollow sections, gaps are formed between the adjacent hollow sections, the adjacent hollow sections are connected through a plurality of U-shaped connecting pieces, a dosing pipe is coaxially penetrated in the stirring shaft, a medicine outlet nozzle assembly which is in one-to-one correspondence with the gaps is arranged on the dosing pipe, the medicine outlet nozzle assembly comprises a plurality of horizontal medicine outlet nozzles which are uniformly distributed along the circumferential direction of the cross section of the dosing pipe, the upstream of the dosing pipe is connected with a medicine storage tank through a medicine supply pipe, and the medicine supply pipe is provided with a medicine supply pump and a one-way valve; according to the utility model, the stirring shaft is matched with the dosing pipe, so that a flocculating agent can be added into sewage at different depths, and the contact mixing of the sewage and the flocculating agent can be rapidly realized by matching with the stirring action of the stirring teeth, so that the time consumed by single work of the sludge mixing tank is effectively shortened.

Description

Sludge premixing and stirring device

Technical Field

The utility model relates to the field of sewage treatment equipment, in particular to a sludge premixing and stirring device.

Background

The sludge contained in the sewage needs to be filtered in the molten steel sewage treatment process, a plate and frame filter press is commonly used for producing the sludge in the sewage at present, but in order to avoid the problems that the plate and frame filter press produces sludge cakes and filter cloth filter plates are easy to block and the like, a mixing tank is often additionally arranged at the upper part of the plate and frame filter press, the sewage and a flocculating agent are fully and uniformly mixed in advance and then are pumped into the plate and frame filter press through a gate valve, but the existing sludge mixing tank has the advantages of low mixing efficiency, long mixing process time and certain lifting space.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the background art, the utility model aims to provide a sludge premixing and stirring device which effectively solves the problems in the background art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a sludge premixing and stirring device comprises a barrel body, a sewage inlet pipe, a sewage outlet pipe and an aeration pipe, wherein a gate valve and a sewage pump are arranged on the sewage outlet pipe, the aeration pipe is connected with an aeration ring which is coaxially arranged with the barrel body, a plurality of air outlet holes are uniformly distributed on the aeration ring, a motor-driven stirring shaft is coaxially arranged in the barrel body, stirring teeth are arranged on the stirring shaft, the stirring shaft comprises a plurality of hollow sections, gaps are formed between the adjacent hollow sections, the adjacent hollow sections are connected through a plurality of U-shaped connecting pieces, the connecting pieces are uniformly distributed along the circumferential direction of the cross section of the stirring shaft, a dosing pipe is coaxially penetrated in the stirring shaft, medicine outlet nozzle assemblies which are in one-to-one correspondence with the gaps are arranged on the dosing pipe, each medicine outlet nozzle assembly comprises a plurality of horizontal medicine outlet nozzles which are uniformly distributed along the circumferential direction of the cross section of the dosing pipe, the upper reaches of dosing pipe are connected with medicine storage tank through supplying the pencil, supply to be provided with dosing pump and check valve on the pencil.

Furthermore, the stirring teeth are provided with a plurality of groups along the vertical direction, each group of stirring teeth respectively comprises a plurality of L-shaped teeth which are uniformly distributed along the circumferential direction of the cross section of the stirring shaft, and the lengths of the horizontal parts of the adjacent L-shaped teeth are different.

Furthermore, each group of stirring teeth respectively comprises four L-shaped teeth which are symmetrical in pairs.

Furthermore, the adjacent hollow sections are connected through eight connecting pieces, and the upper end and the lower end of each connecting piece are respectively welded on the two adjacent hollow sections.

Further, a medicine feeding port and a clean water pipe are arranged on the medicine storage tank.

The utility model has the following beneficial technical effects:

according to the utility model, the stirring shaft is matched with the dosing pipe, so that a flocculating agent can be added into sewage at different depths, and the contact mixing of the sewage and the flocculating agent can be rapidly realized by matching with the stirring action of the stirring teeth, so that the time consumed by single work of the sludge mixing tank is effectively shortened, and the sewage treatment efficiency is favorably improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a top view of the assembly structure of the stirring teeth and the stirring shaft according to the embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and fig. 2, the sludge premixing and stirring apparatus according to this embodiment includes a barrel 1, a sewage inlet pipe 2, a sewage outlet pipe 3 and an aeration pipe 4, the sewage outlet pipe 3 is provided with a gate valve 5 and a sewage pump 6, the sewage outlet pipe 3 is connected with a plate-and-frame filter press, an upper stream of the aeration pipe 4 is connected with an air pump or an air storage tank, a lower stream of the aeration pipe 4 is connected with an aeration ring 7 coaxially disposed with the barrel 1, the aeration ring 7 is uniformly distributed with a plurality of air outlets, the barrel 1 is further coaxially disposed with a motor-driven stirring shaft 8, the stirring shaft 8 is provided with stirring teeth, the stirring shaft 8 includes a plurality of hollow sections 9, gaps are formed between adjacent hollow sections 9, the adjacent hollow sections 9 are connected with each other through eight U-shaped connecting members 10, upper and lower ends of the connecting members 10 are respectively welded to the adjacent two hollow sections 9, the eight connecting members 10 are circumferentially and uniformly distributed along a cross section of the stirring shaft 8, guarantee (mixing) shaft 8's structural strength, coaxial wearing to be equipped with in the (mixing) shaft 8 with pencil 11, be provided with the play medicine mouth subassembly with clearance one-to-one on the pencil 11, it includes a plurality of levels along 11 cross sections circumference evenly distributed's of pencil 12 to go out the medicine mouth subassembly, the upper reaches of pencil 11 are connected with storage tank 14 through pencil 13 that supplies, be provided with on storage tank 14 with medicine mouth 15 and clean water pipe 16, it can then add the clear water through 16 joining of clear water pipes of the cationic polyacrylamide flocculating agent that adds medicine mouth 15 and add certain dosage to dissolve, be provided with on the pencil 13 with medicine pump 17 and check valve 18, preferred medicine pump 17 is the constant delivery pump.

The stirring teeth are provided with three groups along the vertical direction, each group of stirring teeth respectively comprises four L-shaped teeth 19 which are uniformly distributed along the circumferential direction of the cross section of the stirring shaft 8 and the horizontal parts of the adjacent L-shaped teeth 19 are different in length, the stirring of the water body close to the stirring shaft 8 and the water body far away from the stirring shaft 8 is realized simultaneously, the four L-shaped teeth 19 are symmetrically distributed in pairs, and the horizontal parts of the two L-shaped teeth 19 are shorter.

The working process of the embodiment is as follows:

filling sewage to be treated into the barrel body 1 through the sewage inlet pipe 2, stopping filling when the treatment capacity is close, then simultaneously starting the motors of the aeration pipe 4, the dosing pump 17 and the stirring shaft 8, spraying a liquid medicine containing a flocculating agent into the sewage of different depths through each gap, simultaneously driving the stirring teeth to stir the sewage in the barrel body 1 by the stirring shaft 8, stopping the dosing pump 17 after the dosage is reached, continuously driving the stirring shaft 8 to rotate for a certain time by the motor, stopping the motor and the aeration pipe 4 after the premixing and stirring are completed, opening the gate valve 5 on the sewage outlet pipe 3, and opening the sewage pump 6 to discharge the sewage in the barrel body 1 to a filter plate frame of the filter press to filter sludge; compared with the prior art, this embodiment can be simultaneously with the sewage of the different degree of depth of flocculant addition in, be favorable to sewage everywhere rapid and the flocculating agent contact mix, the use of deuterogamy aeration pipe 4, single work that can effectual shortening sludge mixing tank is consuming time, is favorable to improving sewage treatment's efficiency.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A sludge premixing and stirring device is characterized by comprising a barrel body, a sewage inlet pipe, a sewage outlet pipe and an aeration pipe, wherein a gate valve and a sewage pump are arranged on the sewage outlet pipe, the aeration pipe is connected with an aeration ring which is coaxially arranged with the barrel body, a plurality of air outlet holes are uniformly distributed on the aeration ring, a stirring shaft driven by a motor is coaxially arranged in the barrel body, stirring teeth are arranged on the stirring shaft, the stirring shaft comprises a plurality of hollow sections, gaps are formed between the adjacent hollow sections, the adjacent hollow sections are connected through a plurality of U-shaped connecting pieces, the connecting pieces are uniformly distributed along the circumferential direction of the cross section of the stirring shaft, a dosing pipe is coaxially penetrated in the stirring shaft, a dosing nozzle assembly which is in one-to-one correspondence with the gaps is arranged on the dosing pipe, the dosing nozzle assembly comprises a plurality of horizontal dosing nozzles which are uniformly distributed along the circumferential direction of the cross section of the dosing pipe, the upper reaches of dosing pipe are connected with medicine storage tank through supplying the pencil, supply to be provided with dosing pump and check valve on the pencil.

2. The sludge premixing and stirring device as claimed in claim 1, wherein a plurality of groups of stirring teeth are arranged along a vertical direction, each group of stirring teeth comprises a plurality of L-shaped teeth evenly distributed along a circumferential direction of a cross section of the stirring shaft, and horizontal portions of adjacent L-shaped teeth are different in length.

3. The sludge premixing and stirring device as claimed in claim 2, wherein each group of stirring teeth comprises four L-shaped teeth which are symmetrical two by two.

4. The sludge premixing and stirring device as claimed in claim 1, wherein the adjacent hollow sections are connected by eight connecting pieces, and the upper and lower ends of the connecting pieces are respectively welded on the adjacent hollow sections.

5. The sludge premixing and stirring device as claimed in claim 1, wherein the drug storage tank is provided with a drug feeding port and a clean water pipe.